US Patent No: 7,911,977

Number of patents in Portfolio can not be more than 2000

Designated router assignment per multicast group address/range

ALSO PUBLISHED AS: 20060268869

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Abstract

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Each of several routers connected to a LAN elects the same router as the designated router for a multicast group identified by a multicast address. Each of the several routers implements a method for electing the designated router. The method includes in one embodiment, generating several values corresponding to the several routers, respectively. The several values are generated as a function of the several routers' IP addresses, respectively, and an IP address of a first multicast group. The values, in one embodiment, are then compared to determine which is the largest. Thereafter each router elects as the designated router for the multicast group, the router corresponding to the largest value.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
CISCO TECHNOLOGY, INC.SAN JOSE, CA10911

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Boers, Arjen Sitges, ES 72 454
Wijnands, Ijsbrand Leuvan, BE 90 488

Cited Art Landscape

Patent Info (Count) # Cites Year
 
CISCO TECHNOLOGY, INC. (3)
* 6,847,638 Multicast system for forwarding desired multicast packets in a computer network 34 2000
* 2006/0018,253 System and method for preserving multicast data forwarding during control failures in a router 37 2004
* 2006/0268,869 Designated router assginment per multicast group address/range 9 2005
 
QUALCOMM INCORPORATED (2)
* 6,633,765 Method and apparatus for performing coverage control for multicast services in a wireless network 31 2000
* 2008/0151,808 ENABLING FOREIGN NETWORK MULTICASTING FOR A ROAMING MOBILE NODE, IN A FOREIGN NETWORK, USING A PERSISTENT ADDRESS 13 2008
 
ROCKSTAR CONSORTIUM US LP (2)
* 6,631,420 Reducing convergence time by a protocol independent multicast (PIM) router 23 1999
* 6,707,796 System device and method for reducing forwarding states in a communication system 27 1999
 
ALCATEL LUCENT (1)
* 2006/0262,792 Co-existing static and dynamic IP multicast 19 2005
 
HUAWEI TECHNOLOGIES CO., LTD. (1)
* 2004/0071,137 Method for forwarding multicast message in network communication 6 2003
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
* 6,507,863 Dynamic multicast routing facility for a distributed computing environment 33 1999
 
MICROSOFT CORPORATION (1)
* 7,013,469 Application program interface for network software platform 85 2005
 
NOKIA SIEMENS NETWORKS OY (1)
* 7,310,335 Multicast routing in ad-hoc networks 27 2000
 
NORTEL NETWORKS LIMITED (1)
* 6,791,980 System, device, and method for reducing the number of multicast routes maintained in a multicast routing information base 13 1999
 
TTI INVENTIONS A LLC (1)
* 2002/0150,094 Hierarchical level-based internet protocol multicasting 184 2001
 
Other [Check patent profile for assignment information] (1)
* 2005/0149,531 Method and apparatus for routing data to a load balanced server using MPLS packet labels 42 2005
* Cited By Examiner

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